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| ICS94228 Datasheet, PDF (11/17 Pages) Integrated Circuit Systems – Programmable System Clock Chip for AMD - K7™ processor | |||
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ICS94228
Electrical Characteristics - REF
TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL = 20 pF (unless otherwise stated)
PARAMETER SYMBOL
CONDITIONS
Output High Voltage VOH5 IOH = -12 mA
Output Low Voltage VOL5 IOL = 9 mA
Output High Current
IOH5
VOH = 2.0 V
Output Low Current
Rise Time1
Fall Time1
Duty Cycle1
IOL5
VOL = 0.8 V
tr5
VOL = 0.4 V, VOH = 2.4 V
tf5
VOH = 2.4 V, VOL = 0.4 V
dt5
VT = 1.5V
1Guaranteed by design, not 100% tested in production.
MIN TYP MAX UNITS
2.4
V
0.4 V
-22 mA
16
mA
1.3
4
ns
1.4
4
ns
45 54 57 %
Electrical Characteristics - CPUCLK (Open Drain)
TA = 0 - 70°C; VDD = 3.3 V +/-5%; VDDL=2.5V+/-5%; CL = 20 pF (unless otherwise stated)
PARAMETER
SYMBOL CONDITIONS
MIN TYP
MAX
UNITS
Output Impedance
Output High Voltage
ZO
VOH2B
VO = VX
Termination to
1
Vpull-up(external)
W
1.2
V
Output Low Voltage
VOL2B
Termination to
Vpull-up(external)
0.4
V
Output Low Current
Rise Time1, CPUCLK
Fall Time1, CPUCLK
Differential voltage-AC1
IOL2B
tr2B
tf2B
VDIF
VOL = 0.3V
VOL = 20%, VOH = 80%
VOH = 80%, VOL=20%
Note 2
18
mA
2.2
2.5
ns
1.3
2.0
ns
0.4
Vpullup(external)
V
+ 0.6
Differential voltage-DC1
Differential Crossover
Voltage1 CPUCLK(Open Drain)
Duty Cycle1
Skew1
Jitter, Cycle-to-cycle1,
CPUCLK
VDIF
VX
dt2B
tsk2B
tjcyc-cyc2B
Note 2
Note 3
VT = 50%
VT = 50%
VT = VX
0.2
Vpullup(external)
V
+ 0.6
1.2 1.4
1.7
V
45 50
55
%
140
200
150
250
ps
Notes:
1 - Guaranteed by design, not 100% tested in production.
2 - VDIF specifies the minimum input differential voltages (VTR-VCP) required for switching, where VTR is the "tr
3 - Vpullup(external) = 2.7V, Min = Vpullup(external)/2-150mV; Max=(Vpullup(external)/2)+150mV
0447Eâ05/07/04
11
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